An electric range for $60 goes a long way. Hell when I was homeless I used a portable gas stove that even works on siphoned gasoline, and packs up in a bag about the diameter of a cellphone wide, hardly ever needed to eat out.
When I visit the US I am always struck by how much stuff people own there, and a lot of that is kitchen stuff specifically. But most of the world -- including many other developed countries -- make do with less and don't necessarily even think about it.
You don't need a large variety of spices, and spices are compact as heck.
If you're going to cook, you can buy same-day or even a few days' worth of food.
It may surprise you to learn that most people want a quality of life exceeding that of a hobo.
Do you really think it's near impossible to endure hotel room or compact apartment living living unless you can absolutely have the tools and space of a full-blown suburban kitchen in there? Comments like these truly remind me of how removed a certain subset is from how billions of people can live comfortably for years on end by improvising modestly.
Similar to another example comment I saw by someone on this site who really thought that it was just impossible to make coffee at home unless he had a full-blown espresso/capuchino machine of the kind some commercial cafe might use.